* test(e2e): add a Codex row that calls a local MCP tool on a first and a resumed turn
* test(e2e): assert the codex mcp row got each value back from the mcp tool call itself
* test(e2e): check the codex mcp row exits cleanly on both turns
* test(e2e): drop the unused content type from the codex mcp result model
* feat(team): let default_team_params attach access_group_ids to every new team
* fix(types): keep default access_group_ids as Sequence for the type discipline gate
* fix(settings): chunk the default access group existence lookup
* test(team): prove default access groups reach the saved team row and type the settings fixtures
* fix(team): check default access groups on the writer so a fresh group is not rejected behind a read replica
* feat(spend-logs): opt-in latest_turn mode that stores only the current turn of stateless requests
* fix(spend-logs): keep bridged Responses rows and classifier audit in latest_turn mode, reject unknown values at boot
* fix(spend-logs): drop the recursive call in the latest_turn trim and type the stateless test cases
* test(spend-logs): format the stateless latest_turn cases
* test(spend-logs): wrap the classifier audit fixture
* fix(spend-logs): type the latest_turn trim inputs
* fix(spend-logs): leave the raw request body unvalidated before the latest_turn trim
* fix(spend-logs): trim classifier rows and ignore continuation keys off /v1/responses in latest_turn mode
* fix(spend-logs): take the classifier's originating request from the logging payload and redact a copy of vector store results
* fix(spend-logs): redact the body selected for storage, after the latest_turn trim
* feat(proxy): give Codex accurate model entries for every model in /v1/models
* fix(router): read a deployment's upstream model without a not-required key access
* fix(proxy): keep Codex tiers for unpriced deployments and match stock entries by declared provider
A deployment with no token price no longer votes a Codex service tier off,
an undescribed model keeps Codex's default reasoning summary parameter,
a Bedrock deployment naming its provider in custom_llm_provider gets Codex's
stock entry, and Bedrock provider namespaces follow the AWS model id format.
* fix(proxy): import cost tracking and provider helpers lazily in the Codex catalog
lite codex imports the catalog before the SDK is initialized, so importing
cost tracking, the Bedrock helpers or provider resolution at module level hit
a circular import and broke every lite command.
* fix(proxy): drop Codex's fast speed tier wherever its priority tier is dropped
Codex shows /fast for a leftover fast speed tier even when service_tiers
no longer offers priority, so an alias, an empty configured tier list or
a configured list without priority showed a /fast toggle that sends nothing.
One helper now sets service tiers, speed tiers and the default together.
* fix(proxy): give an older Codex a translated entry for models past its version
Codex's own entries name the oldest release that can read them in minimal_client_version. A release older than that can fail to decode the entry, such as a reasoning effort it has no name for, which fails the whole catalog, so it now gets the translated entry, whose levels are trimmed to that release
Reworks the redis-client, connect, resolve and testing crates, adds python-compat json loads and
TTL seconds, replaces the redis-store memory tier with a DualCache plus a shared failure log, and
gives the Python side the Redis timeout log throttle and a request OTEL parent span for service events
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
* feat(proxy): let admins allow specific S3 buckets and endpoints in request bodies, block bucket settings otherwise
Client requests can no longer pick s3_bucket_name, s3_output_bucket_name or allow_legacy_cloud_file_ids unless the
value is on general_settings.allowed_client_side_s3_buckets (buckets) or the admin opted in the usual way.
s3_endpoint_url, already blocked, can now be allowed per value through general_settings.allowed_client_side_s3_endpoint_urls
* refactor(proxy): drive the client-side S3 allowlist from one typed field-to-setting map
* fix(proxy): treat a null client-side S3 allowlist in config as empty instead of failing the request
* fix(gemini): omit raw response body from audio transcription error messages
* fix(gemini): raise incomplete transcription interactions as non-retryable 400 and drop response bodies from Vertex transcription errors
* fix(audio_transcription): keep response bodies out of transcription errors
Keep the upstream status on a Gemini interaction that did not complete, so
the router still retries it as it does on main. Gemini stops the same long
clip on some tries and not on others, so a retry can recover it.
Stop quoting the reply in the Deepgram, ElevenLabs, Watsonx, Mistral,
OVHcloud and Scaleway parse errors, and hide pydantic input values on the
Gemini and Vertex response models.
* fix(audio-transcription): keep reply bodies out of watsonx, whisper, xai and validation errors
Watsonx and whisper no longer print the parsed reply after Got: when it has no text field. TranscriptionResponse and the xAI response model hide input in validation errors, so a malformed field cannot quote transcript fragments. Deepgram and ElevenLabs keep the original error text, which is now safe.
* fix(audio-transcription): keep transcripts out of the shared converter's parse errors
* test(audio-transcription): compare wrapped lookup errors instead of pinning upstream wording
---------
Co-authored-by: mateo-berri <277851410+mateo-berri@users.noreply.github.com>
* fix(router): drop supports_web_search false deployments for Anthropic web_search_* and Gemini googleSearch tools
* test(integration): build the web search filter proxy config without mutating the shared config
---------
Co-authored-by: devin-ai-integration[bot] <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(proxy): probe scrypt instead of MD5 in the fips_mode OpenSSL check
* test(proxy): fake a working scrypt so the fips_mode check tests pass on FIPS hosts
* feat(bedrock): enable native structured output for Opus 5 models
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(bedrock): keep govcloud and bare model rows off native output
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(bedrock): retry rejected native schemas with the JSON tool on default-native models
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(bedrock): keep the rejection retry on the unforceable-tool native path
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(bedrock): retry rejected schemas on the Messages path for default-native models
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* test(bedrock): keep JSON-tool streaming coverage on unchanged route
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* style(bedrock): format Messages native output retry
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* test(bedrock): allow profile-only native output metadata
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(bedrock): only disable default-native output on schema-rejection retries
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* test(bedrock): type fixture parameters in native output retry tests
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(bedrock): retry with the JSON tool when Bedrock rejects a schema's grammar size
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(bedrock): drop strict tools after a native-output retry hits the grammar limit
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* style(bedrock): format native output fallback
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---------
Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* feat(packaging): ship litellm-proxy wheels with the proxy extra
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(packaging): keep litellm-proxy out of the proxy extra until PyPI has it
The current release pipeline publishes litellm with whatever pyproject.toml lists, so pinning an unpublished package would break pip install litellm[proxy]. Images and CI still install the locally built gateway wheel
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
* fix(types): define the responses compact call types so during_call guardrails and deployment hooks see them
* test: regenerate dashboard api types and skip compact in the azure sdk client sweep
---------
Co-authored-by: devin-ai-integration[bot] <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The primary stream's mid-stream stall reaches failure_exits as a mapped litellm.Timeout (408), which cools the deployment on the Rust core. Keep that behavior and update the integration test that expected the Python core's exemption. Fallback hops stay exempt through is_stream_stall.
* fix(router): write the prompt caching pin when turn_off_message_logging is on
The success event PromptCachingDeploymentCheck reads had its messages redacted in place by
turn_off_message_logging before any callback ran, so the pin was keyed off redacted-by-litellm,
never written, and every follow-up bounced across the group. Callbacks that route on the request
and never log it now opt out of that redaction and get the request messages back, while every
other callback and the spend log keep the redacted payload.
* fix(logging): type the request-messages payload helper as dict[str, object]
The bare dict return grew the LIT001 count past the merge base and left the returned fields unchecked
* test(integration): type the pin rig's Redis client as Redis[bytes]
The untyped generic grew the basedpyright reportUnknownMemberType count past the merge base
* test(integration): quote the Redis[bytes] annotation so the rig collects at runtime
redis.Redis is not generic at runtime, so the unquoted subscript raised TypeError on import
* fix(logging): read the request messages once as object in the exempt payload helper
Two partially unknown reads of self.messages grew the basedpyright reportUnknownMemberType count past the merge base
---------
Co-authored-by: devin-ai-integration[bot] <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The Rust core built its Scheduler without a Redis cache, so the priority queue lived only in each worker's memory and was never shared across workers or instances. Build it on the routing cache's Redis cache, as the Python core did
* fix(responses): preserve native stream spend on guardrail rejection
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* refactor(responses): type deferred logging dispatch once
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* test(responses): expect guarded rounds on one failure row
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* style(tests): format guarded billing regression
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* style(tests): preserve existing MCP unit formatting
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---------
Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The fallback loggers got the walk's own metadata in place of the request's, so prometheus fallback counters lost the caller's key and team labels. Lay the walk's stamps over a copy of the request's bucket, as run_async_fallback did
* feat(interactions): continue requires_continuation long decodes with continuation_token hops
A foreground Interactions request stops at Google's per-hop output cap with
status requires_continuation and a continuation_token. litellm now re-posts the
request with previous_interaction_id and continuation_token until the status
moves on, merging the hops into one interaction (last id, every hop's steps,
summed usage with initial_input_tokens from hop 1), for non-streaming and
streaming calls. continuation_token is accepted as a request param, and
requires_continuation is a known status for billing.
* refactor(gemini interactions): validate streaming chunks with model_validate
* fix(interactions): keep the held completion across stream hops, stop on a repeated continuation_token, follow the spec redirect
* fix(interactions): add grounding_tool_count per tool type, stop on any seen continuation_token, keep streaming past a [DONE] frame when a hop is pending
* ci(interactions): point the spec canary at aistudio.google.com, where Google moved the Interactions OpenAPI spec
* test(interactions): scripted Google ends each long decode hop with a [DONE] frame
* refactor(interactions): pass requires_continuation and continuation_token through instead of looping hops in the proxy
The caller drives the continuation, the same as against Google directly. /interactions accepts continuation_token in place of input so a resume request needs no input.
* test(proxy): assert the accepted /interactions bodies pass the required-param check
* fix(proxy): keep the router default fallback for input on /interactions, continuation_token stands in for it
---------
Co-authored-by: devin-ai-integration[bot] <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The Rust core records every attempt failure against the routed deployment, so a client GET, DELETE, cancel or input_items call on a response id that the provider answers with 404 counted toward cooldown. The removed Python core never saw these failures. Exempt them in failure_exits next to the background poll 404 and video lookup exits.
The Rust core reports fallback errors only when include_fallback_errors is
literally true. The routing and SDK wire tests still expected the header for
truthy non-bool values (1 and a 5 KB string), which the deleted Python core
produced by accident. Every non-bool value now expects no errors, and the
flag still must not reach the provider.
* fix(zscaler_ai_guard): scan only the last user turn on requests
* fix(zscaler_ai_guard): keep scanning A2A requests and refuse scan_only_tool_results
* fix(zscaler_ai_guard): join the last user turn's text parts with spaces like before
* fix(zscaler_ai_guard): keep scanning tool results when scan_only_tool_results is set
* fix(zscaler_ai_guard): scan the latest user turn when assistant or tool messages follow it
* fix(zscaler_ai_guard): skip the scan when the latest user turn is only whitespace
A blank latest user turn was sent to Zscaler on its own, which answers
Content is empty, so the proxy returned 500 where main returned 200
---------
Co-authored-by: Arnav Maiti <amaiti@zscaler.com>
* fix(anthropic): report temperature/top_p as supported only when the model keeps them
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* test(vertex_ai): accept the generic unsupported-param message for Claude batch rows
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---------
Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(accounting): keep spend commits working when prometheus_client is not installed
The delivery worker imported the ledger metrics module, which imported
prometheus_client at module level. update_database imports the worker
outside its try block, so installs without the proxy-runtime extra failed
every spend commit. The metrics now register only when prometheus_client
is importable and are skipped otherwise
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* style(accounting): note why prometheus_client can be missing
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: Joshua Valluru <326636767+joshua-berri@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
* fix(openai): authenticate raw chat requests with the deployment api_key only, never OPENAI_ADMIN_KEY
openai 3.x request options default to bearer_auth plus admin_api_key_auth, so a deployment whose api_key is empty sent Authorization: Bearer <OPENAI_ADMIN_KEY> to its api_base. Pass security={"bearer_auth": True} when the installed SDK's make_request_options accepts it (openai 2.x has no admin key fallback and no security kwarg)
* test(openai): assert the admin key never reaches the wire whether the SDK sends unsigned or refuses
---------
Co-authored-by: devin-ai-integration[bot] <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* test(integration): stop the wire peer from dropping requests whose bytes arrive late
The scripted wire peer set a fixed 5 s socket timeout, so a request whose
bytes reached it late on a loaded rig was dropped with no reply and the
proxy answered 500 Server disconnected. Remove the timeout and, at
teardown, stop reading on every accepted connection so idle handlers exit
at once. A request still arriving when teardown starts never reaches the
test's respond callback.
* fix(tests): bound wire peer teardown on unread replies and answer complete requests
* fix(tests): poll wire peer reads so teardown keeps queued requests and only cuts stuck calls
* fix(tests): write wire peer replies in pieces so teardown never cuts a client still reading
* fix(tests): give a wire peer reply the whole teardown grace when its write blocked before teardown
---------
Co-authored-by: mateo-berri <277851410+mateo-berri@users.noreply.github.com>
* fix(accounting): keep one undecodable delivery from blocking the ledger
A request whose metadata carried a 401-digit tokens_saved stored that number in
its delivery payload. The query engine could not decode it when the worker
claimed the batch, so every later delivery on the proxy stayed pending
The worker now claims the payload as text and decodes each row in Python. A row
that still cannot be decoded is parked alone while the rest of the batch
applies. The payload builder also clamps integers to the JSON-safe range, so
caller-supplied counts can no longer reach the engine at that size
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(accounting): take spend locks in one order so the ledger cannot deadlock
A ledger delivery updates many spend tables in one transaction, so it can
deadlock with any writer that locks the same rows in another order. It took the
team advisory lock after the user and team rows, while team roster writers take
it first
The delivery now takes every team advisory lock before any row, then writes
tables in one canonical order with ids sorted. It also runs under the rollup
lock_timeout, applies 500 deliveries per batch by default, and spreads retries
with jitter
The writers that could still collide with it now follow the same order. The
budget reset cascade, model allowlist rename, global spend reset, bulk user
update, org delete and the delete-by-list paths lock their rows in key order
first, and access group endpoints update teams and keys in one sorted pass
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* test(accounting): prove a ledger delivery waits instead of deadlocking
Real Postgres tests hold the first lock of a team roster change, an access group
update and a budget reset cascade, start a delivery, and let the other writer
finish. The delivery must wait and then charge once. Before the lock order fix
each case ends in a Postgres deadlock
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* feat(accounting)!: make the SpendLogs ledger the default accounting path
use_spend_logs_ledger now defaults to true, so every request is charged through
LiteLLM_SpendLogDelivery. Setting it to false rolls back to the in-memory and
Redis spend queues, which stay in place. Tests that cover those legacy writers
pin the setting off, and the rest check the queued charge the ledger stores
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* test(proxy): let the mocked client open a transaction for key and team deletes
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(proxy): take team locks first when a model rename rewrites allowlists
A rename locked team rows before user rows while a roster change holds the team
advisory lock and a user row, so the two could deadlock. The rename now takes the
advisory lock for every team that lists the model, sorted, before any row lock.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(accounting): drain a backlog in one worker run, one batch per transaction
One run applied a single fresh batch, so at 500 per batch charges fell behind any
load above that rate. The worker now keeps claiming fresh batches while they come
back full, for up to five seconds, and each batch still commits on its own.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(accounting): queue only the charge when a request's spend log is suppressed
With logging off for a request, the ledger still queued the full row, so a failed
flush or a shutdown could leave its prompt and response in Redis. The queue now
holds only the fields the charge needs.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* style(proxy): format the rename team listing query
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(accounting): remove expired delivery receipts as fast as the worker applies them
The worker now applies several batches per run but still removed one cleanup batch
of applied receipts, so the table could outgrow its retention window. Cleanup now
repeats while each pass removes a full batch, for up to five seconds.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(proxy): retry a model rename when a team starts listing the model mid-lock
The team advisory locks come from a snapshot, so a team that gained the old name
before its row lock was locked without its advisory lock. That attempt now commits
without writing and the next one locks the fresh set of teams.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: Joshua Valluru <326636767+joshua-berri@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
* feat: opt-in model deprecation emails for affected owners
* fix: annotate deprecation sender initialization
* fix: clarify deprecation emails and use consistent settings toggles
* fix: exclude former team admins from deprecation emails
* feat: clarify provider deprecations and model migration steps
* fix(mistral): a named tool_choice is dropped, the model picks any tool
Mistral's chat API takes tool_choice as an enum or as an object naming
one function, {"type": "function", "function": {"name": ...}}. The
mapper only handled strings, so the object was skipped and the request
reached Mistral with no tool_choice at all.
The pin is now rebuilt from the function name alone, since Mistral
rejects fields it does not define. Enum mapping is unchanged, and an
object without a usable name is still left out.
Fixes#39736
* fix(mistral): reject a tool_choice Mistral cannot take unless drop_params is set
* fix(mistral): warn when drop_params drops an unusable tool_choice
Return the unsupported tool_choice error as a value and raise it in
map_openai_params, so the helper models the failure and the caller owns
the exception. A tool_choice dropped under drop_params now logs a
warning naming the value and why Mistral cannot take it.
* fix(mistral): leave tool_choice to the no-tools removal when no tools are sent
An unusable tool_choice on a request with no tools answered 400, while the
merge base and every other OpenAI-compatible route strip tool_choice from
such a request and answer 200. Map tool_choice only when tools are present.
---------
Co-authored-by: Pasqual Troncone <pasqual.troncone@stratebi.com>
Co-authored-by: mateo-berri <277851410+mateo-berri@users.noreply.github.com>
Adds the litellm-router-core crate, its step-driven PyO3 bridge
(RouterCoreHandle / RouterCall) and RustCore (litellm/router_rust/),
served behind LITELLM_RUST through the ROUTER route rule. The host
call-out is the only boundary: every attempt goes through Host::invoke,
there is no native executor path, and RustCore never builds, wraps or
forwards to PythonCore, so router_python_core.py stays deletable.
Attempt preparation lives in litellm/router_attempt.py so it outlives
router_python_core.py.
RustCore matches PythonCore's behavior, including its known bugs (fixed
in follow-up PRs). Routing decisions (strategy picks, routing groups,
PTU, pre-routing, pre-call checks, fallback walk, health routing, access
groups, weights, cooldowns, allowed fails, usage) live in the crate;
work that needs live Python objects (request shaping, endpoints,
streaming, model info facts, callbacks, alerting, prompt management)
lives in the host-side litellm/router_rust/ package (steps/, invoke/,
surface/) driven by Rust steps.
The crate owns the registry. It runs the deployment build loop (secret
references, ids, organization fan-out, install order) and asks the host
for what needs Python, one deployment at a time so errors surface where
Python raised them: secrets, validate, provider and added steps. It
holds the model list, the index maps and the pattern routers with the
Python core's history rules (host_index.rs), and answers the registry
lookups (lookup.rs). The Python views of that state in
litellm/router_rust/surface/ (model_list, index(), names(), patterns())
read the handle, and every write to them becomes a changeset. Model
info, deployment model info, configured limits and model group info are
merged in the crate (model_info.rs, group_info.rs) from catalog rows and
facts the host answers on a model_info step asked at query time, so
price reloads and register_model stay visible. The usage cache key
format is defined once, in the crate.
The crate records each attempt's outcome itself rather than through
litellm callbacks. A streamed attempt is deferred: it counts its
request when the stream opens, and the host's stream wrappers report
the success with the final usage, or a failure after the first chunk,
when the stream ends, as the Python core's callbacks do.
tests/unit/test_router/core characterizes PythonCore's public behavior
and runs every test on both cores, with nothing pending; only the names
of the Python core's own outcome callbacks are asserted on Python alone.
litellm.Router is now final: subclassing it raises TypeError at the class statement, and the
machinery that kept subclass overrides working is gone. The Rust core never honoured subclass
overrides, so they would have silently stopped running there. Custom routing goes through
register_plugin(), settings through apply() and outcomes through observe(). This is a breaking
change for anyone subclassing Router.
Fuzz parity fixes on top of the rebase: the Rust core keeps num_retries,
max_fallbacks, allowed_fails, retry_after, timeout, the tag settings,
routing_strategy_args and the fallback lists as given (the crate reads
them as numbers, update_settings casts as Python does); a deprecated
`model_list = [...]` write reaches the Rust core; a failed set_model_list
is all or nothing on both cores (the deployments served before the call
are put back and the error raised); config_deployments() is a generator and `del` of a plain
attribute works on the Rust core. Least-busy pick reservations from
main now work on the Rust core: its selectors share one reservation
store, routed calls reserve and free their unstarted picks, and
select() and batch cancel do not reserve. On the Python core a dropped
upsert takes its name back off deployment_names, and
get_deployment_order reads every numeric spelling as one int so mixed
orders no longer raise TypeError.
Rulings on the remaining differences, the Python core changed where it
was the odd one out: sync picks and picks by deployment id apply the
team filter as async picks do, so another team's deployment is refused;
the fallback lists and default_litellm_params in RouterSettings are
copies, so an in-place edit is ignored and settings change only through
apply(); one health record with an unreadable timestamp drops out alone;
an empty fallback entry is skipped; a bool cooldown_time is refused at
construction, a bool or string cooldown_time on a deployment or a call
falls back to the router default, and a failure status that no HTTP
status can be is recorded as 500; an infinite or NaN cost and a whole
number wider than 64 bits (ptu_shares) are refused on both cores with
the same error (litellm/router_utils/deployment_numbers.py); and a
/v1/messages stream whose provider iterator raises cools the deployment
and retries like a non-stream call, with the Rust core waiting for that
cooldown before its retry picks.
Differences the proxy parity fuzz and its regression tests found on the
Rust core: a file upload or a batch on an uploaded file falls back only
within its own model group, as on the Python core, since the file lives
with one provider (the host sends same_group_fallbacks_only and the walk
skips targets in other groups); Decisions calls drop deployments whose
provider has no Decisions config, and deployments that refuse the audio
or videos a call carries, unless that would leave none, as the Python
core does, while the retry count still reads the whole group; a file
upload that fails on one order level is created on the next level's
deployments rather than the first level again; and a response that
cannot be converted (a text_completion body without a message) reports
only its own traceback, so a rate limit handled by the attempt before it
no longer turns the error into a 429, and both cores return 500.
